Any advice on where and what Mount? Prices on these things is ridiculous. Can you point me to a decent mount that is affordable for multiple thread patterns?
You have a number of options, they are 1.125-28 Alpha compatible cans.
If you're trying to swap between multiple fixed barrel hosts with different threads, a taper mount is my recommendation.
Basically 3 pattern options for that:
-Griffin taper mounts. Griffin makes an Alpha adapter, as do we.
Rearden/Cherry Bomb pattern. Alpha adapters from Rearden, Q and us
Gyrex system. This is our taper mount, we support a lot of thread patterns and calibers, especially with our mini brakes.
Another option is Griffin Cam-Lok or EZ-Lok, which is the lightest and smallest, but I don't believe common.45 cal rifle thread patterns like 5/8-24 and 11/16-24 are supported.
There are QD systems adapters like ASR and Keymo for Alpha pattern, too, but they are large, heavy and expensive.